Chikengunya has been observed as far north as New Orleans. It is found all through the Caribbean. It is spread by mosquitoes. The mosquitoes are more plentiful during the rainy season. We were in BVI last summer and in November. When on shore we used a lot of DEET. On the boat we rarely saw a mosquito. We did not get sick. I would not avoid travel because of this illness. Just use common sense and lots of DEET.